Face-plate for electric couplings.



No. 715,209. Patented nec; 2,1902.- N. MARSHALL. FACE PLATE FDR ELECTBICCOUPLENGS. l

(Application leipr. 14, 1902.)

(No Model.)

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` 4 Anfon/Ex NITED STATES 'PATENT OFFICE.

NORMAN MARSHALL, or NEWTON, MASSACHUSETTS, ASSIGNOR .To AMARSHALL-SANDERS COMPANY, ou BOSTON, MASSACHUSETTS, A

CORPORATION OF MAINE.

FACE-PLATE FOR ELECTRIC COUPLINGS.'

SPECIFICATION forming part of Letters Patent No. 715,209, dated December 2, v1902.

Original application tiled November 7, 190D. Serial No. 35,775. Divided and this application tiled April 1li, 1902. Serial No. 102,744. (No model.)

Fo'rtZ whom. t mrtg concern:

Beit known that I, NORMAN MARSHALL, of

Newton, in the county of Middlesex and State of Massachusetts, have invented certain new and useful Improvements in Face-Plates for Electric Couplings, of which .the following is a specification. Y

This application is a division of application, Serial No. 35,775, filed November 7, 1900.

The invention relates to devices for pivotally securing a lid or plate within an opening formed in a metallic plate and is especially useful in connection with the manufacture of face-plates for electric couplings. These face-plates are provided with an opening which is closed when the coupling is not in use by a lid which lits Within the opening. This lid is pivoted within the opening in the face-plate, so that it may be swung back when the coupling is to-be used or may be turned down, so as to close the opening when the coupling is not being used. The lid when closed should be just flush with the face-plate, so that the plate and lid will present a smooth and substantially unbroken surface. Y

Heretofore it has been customary to form the pivotal connections between the lid and face-plate by drillingy in from the Opposite edges of the plate until the drill enters the opening in the plate and then inserting the pivot-pins through the holes thus drilled. vIt

is impracticable to thus drill the holes with f accuracy, owingto the length of the lhole which must be drilled and the size of drill employed, and it is impractical, therefore, with this manner of forming the pivoted connection between the lid and face-plate to bring the lid exactly flush with the surface of the face-plate. Moreover, this is a comparatively expensive construction, owing to thetime and skill required in making this form of pivotal connection betweenthe lid and plate.

By the construction embodying the present invention a pivotal connection is provided which may be conveniently and cheaply made and a connection which enables the lid to be forming the connections.

comprises two plugs, which are drilled or slotted to receive pi vot-pins extending from the edges of the lid and are secured in holes located at the sides of the openin g in the faceplate and extending partially through said plate from the back. In assembling` the parts the pivot-pins are secured in the lid (or they might besecured in the plugs) and are then passed into the holes or grooves in the plugs. The lid is then placed in the opening and at the same time the plugs are introduced into the holes in the back of the face-plate and secured therein either by the friction between the plugs and the sides of the hole or by drawing in the metal at the edges of the holes over the edges of the plugs or in any other manner. q

The features of the invention will be better understood from a detailed description of a y In the drawings, Figure l is a sectionalr View showing an electric coupling provided with a face-plate having a lid for closing the opening therein. Fig. 2 is a plan View ofthe face-plate and the receptacle of the coupling.

Fig. 3 is an enlarged Sectional view showing a pivotal connection, and Fig. a is asimilar view of a modified form of connection.

In the drawings, A indicates a receptacle forming one member of an electric coupling, the other member of which consists of a plug B, having coupling-pinsb, adapted to be temporarily inserted in the coupling-sleeves d, carried by thereceptacle A. The face-plate C is secured to the end of the receptacle A Vand is provided with an opening or recess c,

plate A and lid D, Fig. 3, consist of pivotpins E, projecting from the opposite edges of the lid and entering plugs F, secured in holes formed in the back of the plate A and extending partially through the plate. In formdrilled at the points near the edge of the lidrecess c, but only a part Way through. The plugs F, which have been drilled laterally to receive the pins E, are placed on the pins and inserted in the recesses G. The outer edges of the plugs may be beveled, as shown, and the plugs may be secured in the recesses G by swaging or drawing in the metal of the plate A over these beveled edges, as shown. With this construction the holes in the plugs may be accurately formed to bring the lid flush with the face-plate when the parts are assembled. This joint may also be cheaply made and forms a strong and reliable connection.

In the construction shown in Fig. 4 the plug F' is slotted across its inner end instead of being drilled, as in Fig. 3. In assembling the parts thelid is placed in the recess c, with the pins E extending into the recesses G, and then the plugs are inserted, so that the slots register with the pins and confine the pins between the bottoms of the recesses G and the bottoms of the slots.

What I claim, and desire to secure by Letters Patent, is-

l. A plate having an opening therein, a lid fitting within vsaid opening, pivotal connections between said plate and lid consisting of pins extending laterally from the edges of said lid and plugs secured in recesses in the plate into which said pins extend, substantially as described.

2. As an article of manufacture, a faceplate with an opening adapted to be closed by a pivoted lid, a pivotal connection constructed with pins in the edge of the lid which extend laterally into round plugs inserted into closely-fitting recesses extending partially through the face-plate and held in position by closing the surrounding metal of the face-plate over the edge of the plugs, substantially as described.

3. In a face-plate, a pivotal connection consisting of pins projecting laterally from the edges of the lid and extending into round plugs secured in holes in the back of the faceplate, substantially as described.

4:. In a face-plate, a pivotal connection consisting of pins projecting laterally from the edges of the lid and extending into round plugs secured in holes in the back of the faceplate by closing,the metal of the plate over the edge of the plugs, substantially as described.

5. A pivotal connection between two plates consisting of a pivot-pin projecting from the edge of one plate and a round plug secured in a recess extending in from the surface of the other plate, substantially as described.

6. A pivotal connection between two plates consisting of a pin E projecting from the edge of one of the plates, and a plug F' secured in a recess G in the other plate and having a slot across its inner end for receiving said pin, substantially as described.A

In testimony whereof I have affixed my signature in presence of two witnesses.

NORMAN MARSHALL.

Witnesses:

F. N. KIRscHBAUM, E. M. BAKER. 

